LET Reviewer - General Education (SCIENCE - Earth Science 3)

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 Direction: Select the letter of the best answer.

1.  _______ is a region of space containing a huge amount of mass compacted into an extremely small volume with a gravitational influence is so strong that nothing, not even light, can escape its grasp.

a. Accretion disks

b. Black Hole

c. Alternate Universe

d. Parallel Universe

Answer: b. Black Hole

2. During which moon phase are solar eclipses experienced?        

a. full moon

b. new moon

c. first quarter

d. last quarter

Answer: b. new moon

3.  Which of the following is NOT a minor member of the Solar System?

a. comets

b. asteroids

c. moons

d. Sun

Answer:  d. Sun

4. Venus is the hottest planet in the Solar System because _______.

a. it is the nearest planet to the sun

b.  it is covered by thick atmosphere of carbon dioxide

c.  it rotates faster than the other planets

d.  it is twice the size of the earth

Answer:  b. it is covered by thick atmosphere of carbon dioxide

5.  All of the following are renewable energy sources except ________.

a. Tides

b. Sunlight

c. Geothermal Vents

d. Coal mines

Answer:  d. Coal mines

6. What geologic feature under the water is the foundation that supports much of the life in the deep ocean?

a. Volcanoes

b. Earthquakes

c. Mountains

d. Sunlight

Answer: a. Volcanoes

7.  _______ shows the detailed shapes of the Earth's surface, along with its natural and human made features.

a. Time zone

b. Contour interval

c. Geologic map

d. Topographic map

Answer: d. Topographic map

8. All of the following conditions are believed to be caused by acid rain except _______.

a. toxic material in the soil

b. the removal of protective covering from plant leaves

c. the death of fish in many lakes

d. the reduction of coal to slush during washing

Answer: c. the death of fish in many lakes

9. Which does NOT belong in the group?

a. Pluto

b. Ceres

c. Xena

d. Phobos

Answer: a. Pluto

10.  The Earth Hour was conceived to make people be more conscious of _______.

a. carbon emissions

b. global warming

c. wildlife preservation

d. sustainable development

Answer: b. global warming

11. A “carbon footprint” is the _______. 

a. amount of space you occupy

b. amount of carbon paper you use

c. the amount of greenhouse gases you emit

d. none of the above

Answer: c. the amount of greenhouse gases you emit

12. The Moon exhibits different phases because _______.

a. it revolves around the Earth

b. it rotates around its axis

c. the Earth revolves around the sun

d. the Earth’s axis is titled

Answer: a. it revolves around the Earth

13. The moon’s revolution is the cause of the following phenomena except _______.

a. the changing tides

b. the occurrences of eclipses

c. the changing of seasons

d. the different phases of the moon

Answer: b. the occurrences of eclipses

14. Which of the following will be found on the surface of the Earth?

a. Meteoroids

b. Asteroids

c. Meteors

d. Meteorites

Answer: d. Meteorites

15. Nicolas Copernicus proposed which model of the solar system?

a. Tychonic Model

b. Ptolemaic Model

c. Geocentric Model

d. Heliocentric Model

Answer: d. Heliocentric Model

16. When an area is exposed to the penumbra of the shadow, the area will experience a/an _______.

a. total eclipse

b. partial eclipse

c. solar eclipse

d. lunar eclipse

Answer: b. partial eclipse

17.  Gas pollutants in the atmosphere, when mixed with water, form acid rain. Acid rain therefore _______.

I.   is primarily a cause for the changes in the condition of the air

II.   pollutes bodies of water and large tracks of land

III.  is a result of a combination of acids spewed into the air

IV.  is preventable

     

a. I and III

b. II and IV

c. II and III

d. I and IV

Answer: c. II and III

18.   Mangrove forests are important because they ______.        

a. help build islands

b. serve as fish hatcheries

c. prevent erosion

d. all of the above

Answer: d. all of the above

19.  All of the animals below can be found in the Philippines. Which of them is on the endangered species list?      

a. Carabao

b. Whale Shark

c. Maya

d. Philippine Rooster

Answer: b. Whale Shark

20. Which of the following is not found in the air as a pollutant?

a. heavy metals

b. soot

c. excess ozone

d. silt

Answer:  d. silt

21. A land breeze occurs when _______.

a. bodies of water are cooler than bodies of land

b. bodies of land are cooler than bodies water

c. bodies of water and land are the same temperature

d. warm air moves faster than cool air

Answer: b. bodies of land are cooler than bodies water

22. The proper use of resources to ensure long-term utilization is called_______.

a. Sustainable Development

b. Ecological Awareness

c. Conservation

d. Segregation

Answer: c. Conservation

23.  Which gas would most likely decline in quantity if all the green plants on Earth suddenly died?

a. nitrogen

b. carbon dioxide

c. water vapor

d. oxygen

Answer:  d. oxygen

24.  All of the following are agents of emission except _______.

a. water

b. wind

c. dust particles

d. none of the above

Answer: c. dust particles

25. Which cloud is considered to be an indicator of a fair weather?

a. nimbus

b. cumulus

c. cirrus

d. stratus

Answer: b. cumulus

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